1927 Atlas tugboat engine. 4:31 video.
https://www.youtube.com/watch?v=2LJ-Eb6hFKM
Previously:
https://www.homemadetools.net/forum/...614#post174318
https://www.homemadetools.net/forum/...733#post174798
https://www.homemadetools.net/forum/...538#post173975
https://www.homemadetools.net/forum/...853#post171291
https://www.homemadetools.net/forum/...760#post140065
https://www.homemadetools.net/forum/...406#post169719
